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Issue 15, 2014
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A series of rare earth complexes with novel non-interpenetrating 3D networks: synthesis, structures, magnetic and optical properties

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Abstract

A series of metal–organic framework {Ln(BCPBA)(H2O)}n {Ln = Nd (1), Sm (2), Eu (3), Tb (4), Dy (5)}; {[Ln(BCPBA)(H2O)](H2O)}n {Ln = Pr (6), Gd (7)} have been synthesized through the hydrothermal synthesis method. These compounds possess non-interpenetrating 3D networks with 10.1438 Å × 17.9149 Å rhombic channels along the [001] direction. The results of temperature-dependent magnetic susceptibility measurements indicate that compounds 4 and 7 exhibit LnIII⋯LnIII antiferromagnetic interactions, while compound 5 exhibits LnIII⋯LnIII ferromagnetic interactions. Frequency dependent out-of-phase signals were observed in alternating current (ac) magnetic susceptibility measurements which indicate that they have slow magnetic relaxation characteristics. The luminescent properties of 1, 2, 3, 4, and 5 are also discussed. Due to the good match between the lowest triplet state of the ligand and the resonant energy level of the lanthanide ion, compound 4 has longer fluorescence lifetime (τ1 = 400.0000 ms, τ2 = 1143.469 ms) and higher quantum yield (Φ = 42%) compared with other compounds.

Graphical abstract: A series of rare earth complexes with novel non-interpenetrating 3D networks: synthesis, structures, magnetic and optical properties

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Publication details

The article was received on 04 Nov 2013, accepted on 21 Dec 2013 and first published on 02 Jan 2014


Article type: Paper
DOI: 10.1039/C3DT53112K
Citation: Dalton Trans., 2014,43, 5793-5800
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    A series of rare earth complexes with novel non-interpenetrating 3D networks: synthesis, structures, magnetic and optical properties

    X. Wei, L. Yang, S. Liao, M. Zhang, J. Tian, P. Du, W. Gu and X. Liu, Dalton Trans., 2014, 43, 5793
    DOI: 10.1039/C3DT53112K

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